Speaking device



D.F.YOUNGBLOOD SPEAKING DEVICE Feb. 5, 1929.- 1,701,349

Filed July 31, 1928 JUUUUUUUUULE C l C /////r c: Ci

U. U U U U U U U nnnnnnnnnnn ATTORNEYS Patented Feb. 5, 1929.

g .UNITED-"STATES Devin FRANKLIN YoUNGBLoon, or SAN ANToNro, TEXAS.

SPEAKING nEVioE.

Application led July 31,

rl`his invention relates tofspeaking devices .such as are adapted for use in ails, asylums and the like Where visitors converse with prisoners, inmates and aims to .provide an im `iroved windouv installation inwvliich .the j window pane or glass has provision for trains mittingg; sound tl'irough the Window frame, the arrangement being such as to prevent the passage ot contraband articles from one side to the other.

ln the accompanying drawing, wherein one illustrative embodiment of t-he invention is shown,

Fig. 1 is a. iront elevation, partly broken away, of a Window installation applied to a metal Wall or partition;

Fig. 2 is a fragmentary sectional view taken on the line 2-'2 of Fig. 1; and

Fig. 3 is a 'fragmentary edge view ot the pane oi' glass shown in Fig. 1.

lin modern jails, asylums, and the .like some provision is usually made for communication between visitors and inmates, but it has been found necessary to prevent the `pas. sage of articles from one to the. other. kThe present invention aims to provide a simple installation wherein a glass Window pane is constructed and arranged to answer the foregoing requirements `without necessitating any modification of the Window frame.

rring to Figs. 1 and 2, there is shown roved glass pane 10 mounted in a glass Vchannel in two similar frame members 11., which a le preierably riveted on opposite r-:ides ot a tool-prooi or metal partition 12 ot a cell or the like, the' frame construction conveniently like those ordinarily en1 1 d forth-e purpose. y To provide for the passage of sound from one .side oi the window to the other, the Window pane 10 is shown as being slightly spaced from the bottoms of the channels by means ot a seriesot L-shaped feet 13 conveniently arrang d at the four corners of the-channels and series 'ot shallow grooves are formed on opposite sides et the glass so that they communicate With each other through the space between the edges ot the glass and the bottoms ot the channels. Herein, there are shown two rows of grooves 14 and 15 adjacent 'to the marginal edges oi' the glass and ar-V ranged in staggered relation, communicating with each otherthrough a single groove 16 which is preferably parallel With the edges oit the glass, the idea being to prevent the passage of an article through a groove 14,

1928. Serial No. 298,593.

a groove 15, the channel and up through a groove 15 and groove 14 to the opposite side of the window. grooves 1G are vpreferably parallel with the marginalv edges of the glass and are concealed behind the inner edges of the 'frame members 11. v L w y Foi-'some installations, only a few of sound conducting grooves may be necessary, but in View of the ltact that theyy can easily be formed on a pane ot glass, and also that some of them are likely to becomey clogged With foreign mat-ter, it is desirable to provide such grooves all around theperiphery ofthe glass von each side. Also, it is obvious that I only one set of .staggered grooves may be used on one side ot the glass while the other side may have a single row of grooves. Referring to Fig. 3, itvvill be noted that the grooves which pass through the marginal edges of the glass are also arranged in staggered relation whereby to prevent or preclude possibility of starting an article which may have been pushed through one side of grooves on its way through and out the other side. It Will be practically impossiblefto force a very small piece of Wire like an ordinary hairpin through the installation.

From the foregoing description, it Will be kseen that such an installation may be made at a very small cost and that the Window glass serves the double purpose of permitting communicants to sce and toconverse with cach other. y

Obviously, the present invention is not restricted to the particular'embodiment thereotherein shown andL described. j

lVvlhat is claimed is 1. Awindow installation for jails and the like comprising, in combination, a trame presenting a Window receiving channel.; and

y a glass pane secured in the channel presenting Vframe comprising complemental rame'membersk secured on opposite sides of a metal Wall and presenting a Window receivingchannel;

As'shown in Fig. 1, the

and a glass pane in said channel and supported with itsmarginal edges spaced from the bottom thereof, vsaid pane presenting` sound conducting openingson opposite sides adjacent to the marginal edges thereof so that sound is conducted through said passages and said channel from one side of the pane to the other side.

4. A window installation of the character described, comprising, in combination, a metal Window frame having a glass receiving channel therein; a glass in said channel; spacer feet supporting the marginal edges ot the glass from the bottoniof the channel said glass having shallow grooves on 0]')posite sides adjacent to the marginal edges thereof, the grooves on one side being staggered with respect to those on the opposite side and arranged to conduct sound through the spaces between the marginal edges of the glass and the bottom of the channel from one side to the other of the glass.

5. A Window installation of the character described co1nprising,`in combination, a pair of metal framev members secured on opposite sides of a partition and presenting a. Window receiving channel; and a glass supported in said channel presenting staggered sets of communicating grooves on the opposite sides extending thron gh them argin al edges thereof to conduct sound from one side of the Window to the other and to prevent the passage oi contraband articles therethrough.

(i. A glass window pane ofthe character described having sound conducting grooves on its opposite 'fa-ces extending through the marginal edges thereof. A

In testimony, that IV claim the Vforegoing as my own. I have hereto aii'iXed my signature.

n DAVID FRANKLIN YOUNG'BLo'on` 

